diff --git a/opm/simulators/timestepping/SimulatorReport.cpp b/opm/simulators/timestepping/SimulatorReport.cpp
index 9c73a816a..57c646318 100644
--- a/opm/simulators/timestepping/SimulatorReport.cpp
+++ b/opm/simulators/timestepping/SimulatorReport.cpp
@@ -35,6 +35,7 @@ namespace Opm
           total_time(0.0),
           solver_time(0.0),
           assemble_time(0.0),
+          assemble_time_well(0.0),
           linear_solve_setup_time(0.0),
           linear_solve_time(0.0),
           update_time(0.0),
@@ -58,6 +59,7 @@ namespace Opm
         linear_solve_time += sr.linear_solve_time;
         solver_time += sr.solver_time;
         assemble_time += sr.assemble_time;
+        assemble_time_well += sr.assemble_time_well;
         update_time += sr.update_time;
         output_write_time += sr.output_write_time;
         total_time += sr.total_time;
@@ -101,6 +103,14 @@ namespace Opm
             }
             os << std::endl;
 
+            t = assemble_time_well + (failureReport ? failureReport->assemble_time_well : 0.0);
+            os << "   Well assembly time (seconds): " << t;
+            if (failureReport) {
+                os << " (Failed: " << failureReport->assemble_time_well << "; "
+                   << 100*failureReport->assemble_time_well/t << "%)";
+            }
+            os << std::endl;
+
             t = linear_solve_time + (failureReport ? failureReport->linear_solve_time : 0.0);
             os << " Linear solve time (seconds): " << t;
             if (failureReport) {
@@ -110,7 +120,7 @@ namespace Opm
             os << std::endl;
 
             t = linear_solve_setup_time + (failureReport ? failureReport->linear_solve_setup_time : 0.0);
-            os << " Linear solve setup time (seconds): " << t;
+            os << "   Linear solve setup time (seconds): " << t;
             if (failureReport) {
                 os << " (Failed: " << failureReport->linear_solve_setup_time << "; "
                    << 100*failureReport->linear_solve_setup_time/t << "%)";
diff --git a/opm/simulators/timestepping/SimulatorReport.hpp b/opm/simulators/timestepping/SimulatorReport.hpp
index 46497558d..b505a8fd3 100644
--- a/opm/simulators/timestepping/SimulatorReport.hpp
+++ b/opm/simulators/timestepping/SimulatorReport.hpp
@@ -34,6 +34,7 @@ namespace Opm
         double total_time;
         double solver_time;
         double assemble_time;
+        double assemble_time_well;
         double linear_solve_setup_time;
         double linear_solve_time;
         double update_time;
diff --git a/opm/simulators/wells/BlackoilWellModel_impl.hpp b/opm/simulators/wells/BlackoilWellModel_impl.hpp
index 8d25e5df1..964bbdd95 100644
--- a/opm/simulators/wells/BlackoilWellModel_impl.hpp
+++ b/opm/simulators/wells/BlackoilWellModel_impl.hpp
@@ -809,6 +809,8 @@ namespace Opm {
     {
 
         last_report_ = SimulatorReportSingle();
+        Dune::Timer perfTimer;
+        perfTimer.start();
 
         if ( ! wellsActive() ) {
             return;
@@ -857,6 +859,7 @@ namespace Opm {
         logAndCheckForExceptionsAndThrow(local_deferredLogger, exception_thrown, "assemble() failed.", terminal_output_);
 
         last_report_.converged = true;
+        last_report_.assemble_time_well += perfTimer.stop();
     }
 
     template<typename TypeTag>